7797920 has 96 divisors (see below), whose sum is σ = 20829312. Its totient is φ = 2737152.

The previous prime is 7797919. The next prime is 7797953. The reversal of 7797920 is 297977.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47759 + ... + 47921.

It is an arithmetic number, because the mean of its divisors is an integer number (216972).

Almost surely, 2^7797920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7797920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10414656).

7797920 is an abundant number, since it is smaller than the sum of its proper divisors (13031392).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7797920 is a wasteful number, since it uses less digits than its factorization.

7797920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214 (or 206 counting only the distinct ones).

The product of its (nonzero) digits is 55566, while the sum is 41.

The square root of 7797920 is about 2792.4756041907. The cubic root of 7797920 is about 198.3016183233.

The spelling of 7797920 in words is "seven million, seven hundred ninety-seven thousand, nine hundred twenty".